Contact Gorilla™ is an update service that helps you ask your friends to update your address book. It connects to your Gmail, Hotmail or Yahoo! account and asks those who you select if their information is still current. If they provide newer information, their changes are saved directly back into your address book.
Entering your name and account information
Select which contacts you'd like to invite to update their information
Enter a custom message for them to see
Connect a supported email service to the same account
Ask your Facebook friends to put their information in your contact list also
See who's updated their information & when. Bounced invitations are shown to help you clean old email addresses from your contact list
See exactly what information your friends have changed